Sudan Red G

Sudan Red G
Names
	Preferred IUPAC name 2-[(E)-(2-Methoxyphenyl)diazenyl]naphthalen-2-ol
Identifiers
CAS Number	1229-55-6 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1986529;
ChemSpider	10441568 ;
ECHA InfoCard	100.013.608
EC Number	214-968-9;
PubChem CID	14678;
UNII	J95C286WK5 ;
CompTox Dashboard (EPA)	DTXSID3061635 ;
	InChI InChI=1S/C17H14N2O2/c1-21-16-9-5-4-8-14(16)18-19-17-13-7-3-2-6-12(13)10-11-15(17)20/h2-11,20H,1H3/b19-18+ Key: ALLOLPOYFRLCCX-VHEBQXMUSA-N ; InChI=1/C17H14N2O2/c1-21-16-9-5-4-8-14(16)18-19-17-13-7-3-2-6-12(13)10-11-15(17)20/h2-11,20H,1H3/b19-18+ Key: ALLOLPOYFRLCCX-VHEBQXMUBE;
	SMILES COc3ccccc3/N=N/c1c2ccccc2ccc1O;
Properties
Chemical formula	C17H14N2O2
Molar mass	278.28 g/mol
Melting point	225 °C (437 °F; 498 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H350
Precautionary statements	P201, P202, P281, P308+P313, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sudan Red G is a yellowish red lysochrome azo dye. It has the appearance of an odorless reddish-orange powder with melting point 225 °C. It is soluble in fats and used for coloring of fats, oils, and waxes, including the waxes used in turpentine-based polishes. It is also used in polystyrene, cellulose, and synthetic lacquers. It is insoluble in water. It is stable to temperatures of about 100–110 °C. It was formerly used as a food dye, but still appears to be used for this purpose in China. It is used in some temporary tattoos, where it can cause contact dermatitis. It is also used in hair dyes. It is a component of some newer formulas for red smoke signals and smoke-screens, together with Disperse Red 11.

Other Names

There are various names for Sudan Red G, including Brilliant Fat Scarlet R, C.I. Food Red 16, C.I. Solvent Red I, C.I. 12150, Ceres Red G, Fat Red BG, Fat Red G. Lacquer Red V2G, Oil Pink, Oil Scarlet 389, Oil Vermilion, Oil Red G, Oleal Red G, Plastoresin Red FR, Red GD, Resinol Red G, Silotras Red TG, Solvent Red 1, Sudan R, and amethoxybenzenazo-β-naphthol (MBN).

Toxicity & Safety Issues

According to European Food Safety Authority, Sudan Red G is considered genotoxic and/or carcinogenic.^[1]

References

^ EFSA ::. Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) to review the toxicology of a number of dyes illegally present in food in the EU

[1] EFSA ::. Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) to review the toxicology of a number of dyes illegally present in food in the EU

[1]